Differential Output Amplifier (CB6135E)

This circuit of old American documentation (1965) can be applied to any transistor.

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Automotive alarm 555 (CB8958E)
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Precision Voltage to Frequency Converter (CB6106E)
Suggested by the National Semiconductor in 1980s documentation, this circuit uses components from the...
CMOS interface with optical coupler (CB25493E)
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